The genome of the different cell changes. In other words, the cell can turn on or off certain genes, or the gene expression.
Answer:
respiratory system
Explanation:
The function of the respiratory system is to move two gases: oxygen and carbon dioxide.
• Hypothalamus-connects the endocrine system to the nervous system.
It is a structure within the brain which secretes the hormones – releasing hormones which than stimulate or inhibit the secretion of hormones from the pituitary gland.
• Pituitary gland (hypophysis) - called the “master gland” of the endocrine system
It is a three-lobe endocrine gland: The anterior pituitary (regulates growth, stress, reproduction), intermediate lobe (secretes melanocyte-stimulating hormone) and posterior pituitary (connection to the hypothalamus).
• Pineal gland - secretes a hormone that regulates sleep cycles.
Pineal gland is located in the epithalamus and it secretes melatonin hormone that regulates circadian and seasonal cycles.
• Thymus - regulates the development and differentiation of T lymphocytes
Thymus is a lymphoid organ of the immune system where the T lymphocytes mature.
Answer:
Cardiac arrest is the abrupt loss of heart function in a person who may or may not have been diagnosed with heart disease. It can come on suddenly, or in the wake of other symptoms. Cardiac arrest is often fatal, if appropriate steps aren’t taken immediately.
Each year in the United States, more than 350,000 cardiac arrests occur outside of a hospital setting.
These two distinct heart conditions are linked. Sudden cardiac arrest can occur after a heart attack, or during recovery. Heart attacks increase the risk for sudden cardiac arrest. Most heart attacks do not lead to sudden cardiac arrest. But when sudden cardiac arrest occurs, heart attack is a common cause. Other heart conditions may also disrupt the heart’s rhythm and lead to sudden cardiac arrest. These include a thickened heart muscle (cardiomyopathy), heart failure, arrhythmias, particularly ventricular fibrillation, and long Q-T syndrome.
Cardiac arrest is reversible in most victims if it's treated within a few minutes. First, call 911 for emergency medical services. Then get an automated external defibrillator if one is available and use it as soon as it arrives. Begin CPR immediately and continue until professional emergency medical services arrive. If two people are available to help, one should begin CPR immediately while the other calls 911 and finds an AED.
Sudden cardiac arrest is a leading cause of death – over 320,000 out-of-hospital cardiac arrests occur annually in the United States. By performing Hands-Only CPR to the beat of the classic disco song “Stayin’ Alive,” you can double or even triple a victim’s chance of survival.
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